Foundry-cupola.



G. M. KLUG.

FOUNDRY CUPOLA.

APPLICATION FILED MAY18, 1914.

1,1 35,025. Patented Apr. 13, 1915.

XUMnassas Imam 0v THE NORRIS PETERS CO.. PHOTO-LITHQ, WASHINGTON, D. C

V FOUNDRY-CUPOLA.

Specification of Letters ratent.

[ PatentedApr. 13;, 1915.

Application filed May 18, 1914. 7 Serial No. 889,337.

To all whom it may concern} Be it known that I, GEORGE M. KLUe,a. citizen of the United States of America, residing at Ionia, in the county of Ioniaand State of Michigamhave invented certain new and useful Improvements in Foundry-Cu polas; and I dohereby declare the'following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. r f

This invention relates to foundry cupolas and has for its principal object the provision of means for removing the residue of molten metal and slag from the cupola before dropping the bottom of the cupola and after the major portion of the .metal has been withdrawn through the regular outlet.

To this end I have embodied my invention in the construction shown in the drawings and in which,

Figure lis a verticalsection through the 1 lower portion of a cupola equipped with my invention, said section being on the line 1-1, Fig. 2. Fig. 2 is a fragmentary view of the cupola from beneath. Fig. 3 is a .view similar to Fig. 1 but withthe auxiliary opening open for the discharge of the residue of material from the cupola, and Fig.

in detail showing a modification of my device. 7

Like reference characters refer to like parts throughout the several views of the drawing.

The vertical wall 1 of the cupola is lined with fire clay or similar heatresistant material and at the front thereof near the bottom of the cupola, said wall and lining are pierced to form'the -usual outlet opening .2, through which the molten metal may be discharged to the spout 3 being carried thereby to any convenient receptacle. The bottom of the cupola is formed of two plates d of semicircular outline which are hingedly attached to the wall 1 at diametrically opposed points, said plates being adapted to swing toward each other and be secured to form the bottom of the cupola as shown.- Above the bottom thus formed a mixture of heat resistant material 5 is placed forming a protective wall between the plates 4 and the molten metal and such material is of a thickness that its upper surface is below or insubstantially the same plane horizontally as the outlet opening 2, and normally, the upper surface of the material'5is formed concaved. or dished with the lowest point of the surface. at substantially the center of-thef' cupola. This construction described :is the ordinarycupola structure when in running order and after as much of the molten metal has been'removed as is possible through the outlet opening 2, there will always remain a residue of metaland slag. It isthe practice to drop the bottom plates i with this residue remaining in the cupola uponcompletion of a run of the cupola, andmanytimes, the

molten metal thus dropped will splashupon employees causing seriousinjury. :"I have provided means to avoid thisu n'desirablehappening as follows. One of the bottom plates dis provided withan :opening therein near the straight side-thereof and in preparing the cupola for a run, a funnel 6 formed of fire clay or similar material is located with its smaller v end'in'said opening,

the funnel extendingupwardly' nearly to the 7 upper surface of thematerial 5 when it is" a placed in the cupolja as' shown in Figs. 1 and 3. A circular plate 7, having in the edges thereof diametrically opposed notches 8 covers the said opening being retained in position against the lower side'of the bottom plate 4by retaining members '9 'formed from strips of metal and secured tothe plate 4, each member -9 having,an offset portion between which and the plate t, the circular,

plate 7 is held A handle IO isYfiXed to the plate 7. and is of use .in turningitback and .forthjto positionit for removal or to. turn it so that-thenotches Swill be away from the members 9 and the plate held in position. 7

lVith, this construction,;after'the@mo1ten metalihasbeen drawn off as much as'possible through the outlet opening 2, the plate 7 is removed by turning it so that its notches 8 are brought opposite the ends of the members 9 and are'ceptacle is located below the opening in the bottom plate, after which the material in the funnel 6 may be removed by use of a rod making an opening for the passage of the residue of molten metal and slag to the receptacle. In many cases the mate rial 5 will readily drop through the opening on removal of the plate 7 so that no removal of the material in the funnel is necessary. When the residue has been drawn off, the receptacle may be removed and the bottom dropped in the usual manner, there being no danger of splashing molten metal as heretofore. It is of course understood that the upper surface of the material 5 may not always be concaved with the lowest portion at the center of the cupola but that the lowest portion of the upper surface of said material may be variously located. In such case, the funnel 6 should be located adjacent said lowest point, and it is contemplated that the auxiliary outlet construction may be placed at any desired position with reference to the base or walls of the cupola such that it will best fulfil its desired functions.

The disclosure made is of a complete and operative embodiment of my invention, but such disclosures is to be taken as diagrammatic and illustrative of the invention and not as limiting it to any precise specific structure, other than made necessary by the terms of the appended claims.

I have shown in Fig. 4 a modification, for instance, in which a tube 6 is used in place of a funnel shaped member, and the same I supported by the margin of the plate 4, and the supports for the circular plate 7 are formed integral with the plate 4, as at 9. Various other modifications obviously may be used if preferred,without departing from the spirit of my invention.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A foundry cupola having a bottom and a vertical wall with an opening in the vertical wall providing an outlet for the re moval of molten metal from the cupola, and means provided in the cupola for re- 'moval of the residue of molten material in the cupola below the level of said outlet opening.

2. A foundry cupola having a bottom and a vertical wall with an opening in the vertical wall providingan outlet for the re- -moval of molten metal from the cupola, and

means provided in the bottom of the cupola for removal of the residue of molten material in the cupola below the level of said outlet opening.

3. A foundry cupola having a bottom provided with an opening therein, a funnel positioned in said opening, a plate covering the opening and against which the funnel rests, and means for detachably securing said plate over the opening.

4. A foundry cupola having a bottom pro vided with an opening therein, a funnel positioned in said opening and extending above the bottom, a closure for the opening comprising a plate and against which the funnel rests, and retaining members at tached to the bottom and engaging said plate to retain it in position to close the said opening.

5. A foundry cupola having a bottom, a funnel extending through said bottom, a plate covering the lower end of the funnel, and retaining members attached to the bottom for retaining the plate in position to close the lower end of the funnel.

6. A foundry cupola having a bottom, a funnel extending through said bottom, a plate for closing the lower end of the funnel, notches in the plate and retaining members for holding said plate in position, said notches permitting the engagement of the plate and retaining members.

7. A foundry cupola having a bottom, a funnel extending through said bottom, a plate for closing the lower end of the funnel, spaced apart retaining members adapted to engage and hold the plate in position, said retaining members connected to the bottom, notches in the plate for permitting the engagement and disengagement of the plate and retaining members, and a haildle connected to the plate for manual operation thereof.

In testimony whereof I have aflixed my signature in presence of two witnesses.

GEORGE M. KLUG.

Witnesses:

Gno. F. LANSTER, JULIA C. BEHLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

